Collapsible torque wrench

Abstract

A collapsible torque wrench includes: a shank having a drive head at a front end and two pivoted ends at a rear end; a connection rod, a front end of which being pivotally connected with the first pivoted end; a housing having a tubular body and a casing fixedly disposed on one side of the tubular body, the connection rod being relatively slidably fitted in the tubular body; a torque adjustment mechanism being mounted in the tubular body and including a fixing block, the fixing block being mounted in the tubular body by at least two pins; and a stop member received in the casing. A front end of the stop member is pivotally connected with the second pivoted end. The fixing block is easily demounted from the tubular body for replacement.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to a torque wrench, and more particularly to a collapsible torque wrench.[0003]2. Description of the Related Art[0004]A conventional torque wrench generally has torque setting function. In the case that the wrenching torque applied by the wrench to a threaded member exceeds the set value, a warning effect is created to warn a user to stop wrenching.[0005]FIGS. 1 to 3 show a conventional torque wrench 10. The torque wrench 10 includes a shank 12. A drive head 14 is disposed at a front end of the shank 12 for connecting with a socket or fitting onto a threaded member. A rear end of the shank 12 is a pivoted end 13. A branch bar 15 is disposed on one side of the shank 12. The torque wrench 10 further includes a connection rod 16. A front end of the connection rod 16 is pivotally connected with the pivoted end 13 of the shank 12 via a pivot pin 161. The torque wrench 10 further includ...

AI Technical Summary

Benefits of technology

[0010]It is therefore a primary object of the present invention to provide a collapsible torque wrench, in which the components can be easily replaced without wasting.

[0011]It is a further object of the present invention to provide the above collapsible torque wrench, in which the components are assembled in such a manner that the components will not over-abrade each other so as to ensure the precision of the torque value of the wrench.

[0018]Accordingly, the fixing block is demountably / removably mounted in the tubular body, and can be easily replaced. The installation of the fixing block will not cause deformation of the fixing block.

[0020]Preferably, a relatively soft member is mounted in the pivot portion between the shank and the connection rod, the gap between the shank and the connection rod is minimized and the wear thereof is reduced. The precision of the torque value of the torque wrench can be ensured.

Problems solved by technology

This will affect the smoothness of operation of the mechanism and deteriorate the precision of the torque value of the wrench.

As a result, the component cannot be independently replaced.

This leads to waste of resource.

Accordingly, the poor structural design of the conventional torque wrench 10 leads to higher cost for replacement of the components and deterioration of the precision of the torque value and needs to be improved.

Images